TWI403382B - Turning on and off device of a splash guard of a machine tool - Google Patents

Abstract

A turning on and off structure of a splash guard of a machine tool contains a transmitting mechanism connected with a guard plate of the splash guard to turn on or off the guard plate during tool changing process of a tool changer, wherein the transmitting mechanism includes a first transmission wheel connected with a camshaft of the tool changer, and the first transmission wheel axially couples with a second transmission wheel, and a flexible member is defined between the first and the second transmission wheels and includes a guiding element, the guard plate includes a transmitting seat having a slot to receive the guiding member, and the guiding member displaces along the slot of the transmitting seat reciprocatingly, such that dusking the tool changing process, the camshaft of the tool changer actuates the first transmission wheel to rotate, and then the flexible member is actuated to rotate so that the guiding member actuates the transmitting seat and the guard plate to turn on and off along a rotating path of the flexible member, thus lowering assembly cost.

Description

Protective door opening and closing device for machine tool

The invention provides a protective door opening and closing device for a machine tool which can reduce the assembly cost by directly driving the protective door to start and close the displacement by the power of the tool change mechanism.

According to the general tool machine, a tool magazine and a tool change mechanism are arranged, and a preset tool can be placed in the tool magazine, and the tool change arm of the tool change mechanism is used to rotate the knife between the tool spindle and the machining spindle of the machine tool. Tool change such as drawing, rotary tool change and inserting knife, and inserting the preset tool on the machining spindle for machining; however, the debris and cutting fluid generated during the process are often sprayed. Splashing on the tool magazine and the tool change mechanism, and easily damaging the components of the tool magazine and the tool change mechanism. To prevent this from happening, it is generally installed between the machining spindle and the tool magazine and the tool change mechanism to control the opening and closing. The protective door can be controlled to close the protective door to block the debris or cutting fluid splashed during the processing. When the tool changer performs the tool change operation, the protective door is controlled to open the protective mechanism. The tool change arm can be rotated to the machining spindle for tool change such as knives, knives and inserts.

At present, the opening and closing mode of the protective machine door for the conventionally used machine tool is generally that the protective door connection can be the driving source of the pressure cylinder for the opening and closing action of the moving protection door, and when the tool changing mechanism performs the tool changing operation, Firstly, the driving source is controlled to open the protective door, and then the power source of the starting tool changing mechanism is controlled to drive the tool changing arm to perform the tool changing such as rotating the knife, the drawing knife, the rotary tool changing and the inserting knife, and the preset tool is inserted. It is placed on the machining spindle; after the tool change operation is completed, the drive source is controlled to close the protection door, and the machining spindle of the machine tool can be processed; however, the opening and closing mode of the protection door can achieve the barrier debris Or the purpose of the cutting fluid, but because the driving source and the connecting component of the opening and closing action must be additionally installed, the assembly cost is increased, and the opening and closing action of the protective door can be changed with the tool changing mechanism. The arm is used for timing matching, that is, the driving source must be controlled to change the time of opening and closing the protective door, and thus the manner of separately controlling, it is difficult to ensure that the action of the protective door and the changing arm are matched with each other, thereby making the tool changing mechanism The method smoothly carries out the tool change operation.

In view of this, the inventor has been engaged in research and development and production experience of related industries for many years, and has conducted in-depth research on the problems currently faced. After long-term efforts and trials, he finally developed a protective door opening and closing device for machine tools. In order to greatly improve the accuracy of assembly and to improve the shortcomings of the formula, this is the design tenet of the present invention.

The main purpose of the present invention is to provide a protective door opening and closing device for a machine tool, which is provided with a protective door with a door panel between the tool changing mechanism and the machining spindle, and a transmission mechanism is connected to the door plate so that the door panel can be And the opening and closing displacement actuation of the tool change operation of the tool change mechanism; wherein the transmission mechanism is provided with a first transmission wheel coupled to the camshaft of the tool change mechanism, and the lateral position of the first transmission wheel And a second transmission wheel is pivoted, and a flexible member is disposed on the first and second transmission wheels, and a guiding member is disposed on the flexible member, and a transmission seat is fixed on the door plate. The transmission seat is provided with a guiding groove for guiding the guiding member, and the guiding member can be reciprocally displaced along the guiding groove of the transmission seat, and when the tool changing operation is performed, the cam shaft of the tool changing mechanism is interlocked The first transmission wheel rotates and drives the flexure to start to rotate, and then the guiding member drives the transmission seat and the door panel to reciprocate the opening and closing displacement along the rotating path of the flexure; thereby, utilizing the transmission mechanism Linking the drive, directly through the camshaft of the tool change mechanism For movable protective door open, closing displacement actuation, and thus to reduce the assembly cost for practical purposes.

Another object of the present invention is to provide a protective door opening and closing device for a power tool, wherein a first transmission wheel train of the transmission mechanism is coupled to a cam shaft of the tool change mechanism, and when the tool change operation is performed, The camshaft of the tool change mechanism directly drives the door panel to act as the opening and closing displacement, and the action of opening and closing the protective door and the tool changing operation of the tool changing mechanism are matched in sequence, thereby achieving the practical purpose of ensuring smooth tool change.

In order to make the reviewer further understand the present invention, a preferred embodiment will be described in detail with reference to the following figures: Please refer to Figures 1 and 2 for the protective door opening and closing of the machine tool of the present invention. The device is provided with a protective door 20 between the tool changing mechanism 10 and the machining spindle of the machine tool for blocking the spattering debris or cutting fluid; wherein the tool changing mechanism 10 is provided on the machine base 11 The power source of the motor 12 is configured to rotate the connecting drive camshaft 13 and drive the tool change arm 14 to perform a tool change operation such as a rotary cutter, a cutter, a rotary cutter, a knife insertion, and a reverse reset; A frame 21 is disposed on the side of the frame 11 of the tool change mechanism 10, and the frame 21 is provided with an opening 211, and two slide rail groups 212 and 213 are disposed above and below the opening 211 for sliding a door panel 22, and the door panel 22 is reciprocally displaceable along the two rail sets 212, 213 to open and close the opening 211 of the frame 21; and the door panel 22 of the guard door 20 and the camshaft 13 of the tool change mechanism 10 A transmission mechanism 30 and a linkage group 36 are provided between the interlocking mechanisms, so that the camshaft 13 of the tool change mechanism 10 can drive the door of the protection door 20. The driving mechanism 30 includes a first transmission wheel 31, a second transmission wheel 32, a flexure 33, a guiding member 34 and a transmission base 35; the first The transmission wheel 31 is mounted on the frame 21 of the protection door 20, and the second transmission wheel 32 is pivotally disposed at a suitable position on the side of the first transmission wheel 31, and the first transmission wheel 31 is The flexure 33 is wound around the second transmission wheel 32, and is flexibly transmitted by the first transmission wheel 31, the second transmission wheel 32 and the flexure 33. In the embodiment, the first transmission wheel 31 is provided. And the second transmission wheel 32 can be a sprocket, the flexible member 33 is a chain; and the flexible member 33 is provided with a guide member 34 which can be a roller, and the guide member 34 is provided The driving member 35 is mounted on the door panel 22 of the protective door 20, and the driving base 35 is provided with a linear guiding groove 351 for receiving the guiding member 34. And the guiding member 34 is reciprocally displaceable along the guiding groove 351 of the transmission base 35 when the flexible member 33 is rotated. The interlocking group 36 is coupled to the first transmission of the transmission mechanism 30. Between the wheel 31 and the cam shaft 13 of the tool change mechanism 10, so that the cam shaft 13 of the tool change mechanism 10 can drive the first transmission wheel 31, the second transmission wheel 32 and the flexure 33 to perform flexible transmission; In the example, the interlocking group 36 is a sprocket set, and is provided with a first sprocket 361 coupled with the camshaft 13 of the tool changing mechanism 10, and the first sprocket 361 is coupled and driven by the first chain 362. a second sprocket 363, and a third sprocket 364 that is rotatable and coaxially disposed on the second sprocket 363. The third sprocket 364 is coupled to the first transmission wheel by a second chain 365. The fourth sprocket 366 is rotated, and the first sprocket 366 is coupled to drive the first transmission wheel 31, the second transmission wheel 32 and the flexure 33 for flexible transmission, and the guide member 34 is driven by the guide member 34. The transmission seat 35 is pushed, and the door panel 22 of the protection door 20 is reciprocally displaced to open and close the opening 211 of the frame 21; wherein the first sprocket 361 and the second sprocket 363 and the third sprocket of the linkage group 36 364 and the fourth sprocket 366 are respectively equipped with a proper radius ratio, so that the door panel 22 of the protective door 20 can be matched with the tool change operation of the tool change mechanism 10. The opening and closing displacements are activated; for example, the first sprocket 361, the second sprocket 363, the third sprocket 364, and the fourth sprocket 366 have a radius ratio of 2:1:2:1, when the first sprocket 361 When the first chain 362 is rotated, the second sprocket 363 is rotated two times, and the third sprocket 364 is rotated two times with the second sprocket 363, and is linked by the second chain 365. The sprocket 366 and the first transmission wheel 31 are rotated four times, so that the opening and closing displacement of the door panel 22 can be time-matched with the tool change operation of the tool change mechanism 10.

Referring to FIG. 3, in the present invention, when the tool change operation is performed, the motor 12 of the tool change mechanism 10 continuously drives the cam shaft 13 to rotate, and the tool change arm 14 starts to continuously rotate, and the cam shaft 13 simultaneously The first sprocket 361 of the driving interlocking group 36 starts to rotate continuously. The first sprocket 361 continues to interlock the second sprocket 363 with the first chain 362, and the third sprocket 364 moves with the second sprocket 363. Rotating, and the second chain 365 continues to interlock the fourth sprocket 366 and the first transmission wheel 31 to rotate; when the first transmission wheel 31 starts to rotate continuously, that is, the driving member 33 is continuously rotated, and the guiding member 34 is rotated. Displaced along the swivel path of the flexure 33, the drive member 35 on the door panel 22 is laterally displaced by the guide member 34, so that the door panel 22 is continuously opened.

Referring to FIG. 4, the motor 12 of the tool change mechanism 10 continuously drives the cam shaft 13 to rotate, and drives the tool change arm 14 to rotate 90 degrees to perform the knife clamping, so that one end of the tool change arm 14 is fastened to the machining spindle 40. The upper cutter 50 is fastened to the preset cutter 51 on the magazine, and the camshaft 13 continues to interlock the first transmission wheel 31 with the interlocking group 36 to continuously open the door panel 22.

Referring to FIG. 5, after the tool change arm 14 is fastened, the cam shaft 13 is continuously driven to rotate, and the tool change arm 14 is continuously engaged to perform the straight pull-in, and the door panel 22 is continuously opened.

Referring to FIG. 6, the driving camshaft 13 is continuously driven to rotate, so that the tool changing arm 14 starts to rotate the tool, and the door panel 22 is continuously opened, and when the guiding member 34 is displaced with the flexure 33 to the second transmission. When the wheel 32 starts to rotate, the guiding member 34 will start to make a simple harmonic motion, and the opening speed of the sliding door panel 22 will gradually slow down to reduce the vibration and noise when the door panel 22 is opened to the extreme position.

Referring to FIG. 7, when the tool change arm 14 is rotated to a 90-degree position, the guide member 34 is displaced along the swivel path of the flexure 33 to the center of the outer circumference of the second transmission wheel 32. The door panel 22 is fully open.

Referring to Fig. 8, the cam shaft 13 is continuously driven to rotate, so that the tool changer 14 continues to rotate the tool change, and the guide member 34 is displaced along the swivel path of the flexure 33, so that the door panel 22 starts to close.

Referring to Figures 9 and 10, the camshaft 13 is continuously driven to rotate, the tool change arm 14 is continuously rotated to a position of 180 degrees, and the tool insertion is started, and the tool 50 is exchanged to the tool magazine. The preset tool 51 Then, it is inserted into the machining spindle 40, and the camshaft 13 continues to interlock with the first transmission wheel 31 by the linkage group 36, and the door panel 22 is closed by the guide member 34.

Referring to FIG. 11 , after the tool change arm 14 is inserted into the knife, the cam shaft 13 is continuously driven to rotate, so that the tool change arm 14 starts to perform reverse rotation reset, and the door panel 22 is continuously closed, and when the guide member 34 follows When the flexure 33 is displaced to the first transmission wheel 31 and starts to rotate, the guiding member 34 begins to perform a simple harmonic motion, so that the closing speed of the sliding door panel 22 begins to gradually slow down to reduce the closing of the door panel 22 to the extreme position. Vibration and noise; when the guide member 34 is displaced along the swing path of the flexure 33, the door panel 22 is completely closed; thereby, the present invention drives the camshaft 13 to rotate by the motor 12 of the tool change mechanism 10, The tool change arm 14 is subjected to a tool change operation, and the door mechanism 22 of the protection door 20 and the tool change operation of the tool change mechanism 10 are driven by the transmission mechanism to start and close the displacement, thereby reducing assembly cost and ensuring smooth tool change. Practical benefits.

In summary, the present invention has practical and progressive nature, but it has not been disclosed that the same products and publications are disclosed, so that the requirements for invention patent applications are allowed, and the application is filed according to law.

Part of the invention:

10. . . Tool change mechanism

11. . . Machine base

12. . . motor

13. . . Camshaft

14. . . Tool change arm

20. . . Protective door

twenty one. . . frame

211. . . Opening

212. . . Slide group

213. . . Slide group

twenty two. . . Door panel

30. . . Transmission mechanism

31. . . First transmission wheel

32. . . Second transmission wheel

33. . . Flexure

34. . . Guide

35. . . Transmission seat

351. . . Guide slot

36. . . Linkage group

361. . . First sprocket

362. . . First chain

363. . . Second sprocket

364. . . Third sprocket

365. . . Second chain

366. . . Fourth sprocket

40. . . Machining spindle

50. . . Tool

51. . . Tool

Figure 1: Schematic diagram of the structure of the present invention (1).

Figure 2: Schematic diagram of the structure of the present invention (2).

Figure 3: Schematic diagram of the operation of the present invention (1).

Figure 4: Schematic diagram of the action of the present invention (2).

Figure 5: Schematic diagram of the action of the present invention (3).

Figure 6: Schematic diagram of the operation of the present invention (4).

Figure 7: Schematic diagram of the action of the present invention (5).

Figure 8: Schematic diagram of the operation of the present invention (6).

Figure 9: Schematic diagram of the action of the present invention (7).

Fig. 10 is a schematic view showing the action of the knife changing mechanism of the present invention.

Figure 11: Schematic diagram of the action of the present invention (8).

10. . . Tool change mechanism

11. . . Machine base

12. . . motor

13. . . Camshaft

14. . . Tool change arm

20. . . Protective door

twenty one. . . frame

211. . . Opening

212. . . Slide group

213. . . Slide group

twenty two. . . Door panel

30. . . Transmission mechanism

31. . . First transmission wheel

32. . . Second transmission wheel

33. . . Flexure

34. . . Guide

35. . . Transmission seat

351. . . Guide slot

36. . . Linkage group

361. . . First sprocket

362. . . First chain

363. . . Second sprocket

364. . . Third sprocket

365. . . Second chain

366. . . Fourth sprocket

Claims (10)

A protective door opening and closing device for a machine tool, comprising: a machining spindle; a tool change mechanism: a cam shaft; and a protection door: disposed between the tool change mechanism and the machining spindle, the protection door is provided with a frame, and The frame is slidably disposed on the frame; the transmission mechanism is mounted on the frame of the protection door and is provided with a first transmission wheel, and the side of the first transmission wheel is mounted with a second transmission wheel, and is first A transmission member is disposed on the transmission wheel and the second transmission wheel, and a guide member is disposed on the flexible member, and a transmission seat is mounted on the door panel of the protection door, and the transmission seat is provided with a guide guide The guiding groove of the moving member enables the guiding member to be moved laterally and reciprocally; the interlocking group is connected between the first driving wheel of the transmission mechanism and the cam shaft of the tool changing mechanism, so that the cam shaft of the tool changing mechanism can be Drive the transmission mechanism for flexible transmission. The protective door opening and closing device of the machine tool according to the first aspect of the invention, wherein the tool changing mechanism is provided with a power source of a motor on a machine base for connecting the driving cam shaft to rotate and drive The tool changer performs a tool change. The protective door opening and closing device of the machine tool according to the second aspect of the patent application, wherein the frame of the protective door is mounted on the side of the base of the tool change mechanism. The protective door opening and closing device of the machine tool according to claim 1, wherein the frame of the protective door is provided with an opening, and two sliding rail groups are arranged above and below the opening for sliding The door panel is provided, and the door panel can be reciprocally displaced along the two rail groups to open and close the opening of the frame. The protective door opening and closing device of the machine tool according to the first aspect of the invention, wherein the first transmission wheel and the second transmission wheel of the transmission mechanism are sprocket, and the flexible member is a chain. The protective door opening and closing device of the machine tool according to claim 1, wherein the guiding member of the transmission mechanism is a roller. The protective door opening and closing device of the machine tool according to the first aspect of the invention, wherein the transmission seat of the transmission mechanism is provided with a linear guide groove. The protective door opening and closing device of the machine tool according to claim 1, wherein the linkage group is a sprocket set. The protective door opening and closing device of the machine tool according to claim 8, wherein the linkage group is provided with a first sprocket coupled with a camshaft of the tool change mechanism, the first sprocket The first chain link transmits a second sprocket, and a third sprocket of the rotatable co-rotation is coaxially disposed on the second sprocket, and the third sprocket is coupled with the second chain to transmit a transmission mechanism. The first transmission wheel rotates the same fourth sprocket, and the fourth sprocket is coupled to drive the transmission mechanism for flexible transmission. The protective door opening and closing device of the machine tool according to claim 9, wherein the first sprocket and the second sprocket of the linkage group and the third sprocket and the fourth sprocket are respectively equipped with appropriate radii The ratio is such that the door panel of the protective door can be combined with the opening and closing displacement of the tool change operation of the tool change mechanism.